Purser, A. (2013). The sleeping salesman enquiry. Berkley Prime Crime.
Cita Chicago Style (17a ed.)Purser, Ann. The Sleeping Salesman Enquiry. New York: Berkley Prime Crime, 2013.
Cita MLA (8a ed.)Purser, Ann. The Sleeping Salesman Enquiry. Berkley Prime Crime, 2013.
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